Oracle SQL - connecting 2 dates - sql

Question

I have the following code.
It has 2 dates:
1.
(case
when not trunc(iv.dated) is null then trunc(iv.dated) else trunc(iv1.dated)
end) date_stock_received
2.
trunc(dh.actshpdate) SHIP_DATE
Is there a way to join the dates so they show in one column?
select unique li.catnr, li.av_part_no,
(select sum(pl.qty_onhand) from part_loc pl where li.av_part_no = pl.part_no) qty_onhand,
(case
when not trunc(iv.dated) is null then trunc(iv.dated) else trunc(iv1.dated)
end) date_stock_received,
(case
when not sum(iv.quantity) is null then sum(iv.quantity) else sum(iv1.quantity)
end) qty_received,
dp.delqty, od.ord_extordnr, trunc(dh.actshpdate) SHIP_DATE
from leos_item li
LEFT JOIN scm_packtyp sp
ON li.packtyp = sp.packtyp
LEFT JOIN invtran_view_oes iv
ON li.av_part_no = iv.part_no
and (iv.transaction = 'NREC' and iv.location_no = ' RETURNS W')
LEFT JOIN invtran_view_oes iv1
on li.av_part_no = iv1.part_no
and (iv1.transaction = 'CORR+' and iv1.remark like 'STOCK FROM SP PALLET%')
LEFT JOIN oes_delsegview od
ON od.catnr = li.catnr
and od.prodtyp = li.prodtyp
and od.packtyp = li.packtyp
LEFT JOIN oes_dpos dp
ON od.ordnr = dp.ordnr
and od.posnr = dp.posnr
and od.segnr = dp.segnr
LEFT JOIN oes_dhead dh
on dp.dheadnr = dh.dheadnr
and dh.shpfromloc = 'W'
where li.cunr = '816900'
and substr(li.catnr,1,5) in ('RGMCD','RGJCD')
and li.item_type = 'FP'
and li.catnr = 'RGJCD221'
group by li.catnr, li.av_part_no, iv.dated, iv.quantity, iv1.dated, iv1.quantity, dp.delqty,
dp.ordnr, dp.posnr, dp.segnr, od.ord_extordnr, dh.actshpdate
order by li.av_part_no
Current result is ...
... what I would like to see is ...
Is this possible ?

Answer 1

The coalesce function might be what you want.
select trunc(coalesce(iv.dated, iv1.dated, dh.actshpdate)) theDateYouMightWant